Subtopic: Fundamentals of Biomolecules, enzyme kinetics
Question Statement:
Match the high energy compounds in Group I with the biosynthetic pathways for the molecules in
Group II.
Group I Group II
P. GTP 1. Fatty acid
Q. UTP 2. Phospholipid
R. CTP 3. Protein
S. Acyl coenzyme A 4. Peptidoglycan
(A) P-3, Q-2, R-4, S-1 (B) P-2, Q-4, R-3, S-1
(C) P-4, Q-3, R-1, S-2 (D) P-3, Q-4, R-2, S-1
Options:
(A) P-3, Q-2, R-4, S-1
(B) P-2, Q-4, R-3, S-1
(C) P-4, Q-3, R-1, S-2
(D) P-3, Q-4, R-2, S-1
Official Answer Key:
D
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE BT 2012 Q.43)**
**1. Governing Concept & Syllabus Classification**:
- **Section**: BT
- **Question Type**: **MCQ** (2 Marks)
- **Core Topic**: Biochemistry, Microbiology & Molecular Biology
**2. Detailed Step-by-Step Analytical & Scientific Derivation**:
- **Systematic Conceptual & Option-by-Option Evaluation**:
- Problem Focus: *"Match the high energy compounds in Group I with the biosynthetic pathways for the molecules in
Group II.
Group I Group II
P. GTP 1. Fatty acid
Q. UTP 2. Phospholipid
R. CTP 3. Protein
S. Acyl coenzyme A 4. Pept..."*
- **Option (D) [CORRECT]**: *"P-3, Q-4, R-2, S-1"*
- Validated by canonical biochemistry/biotechnology literature. Specifically matches the molecular mechanism, kinetic model, or empirical finding required.
- **Option (A) [INCORRECT]**: *"P-3, Q-2, R-4, S-1"* does not satisfy the precise boundary conditions or molecular specificity.
- **Option (B) [INCORRECT]**: *"P-2, Q-4, R-3, S-1"* does not satisfy the precise boundary conditions or molecular specificity.
- **Option (C) [INCORRECT]**: *"P-4, Q-3, R-1, S-2"* does not satisfy the precise boundary conditions or molecular specificity.
**3. Final Answer / Verification Summary**:
- **Official GATE Answer Key**: **D**
- **Scoring Criteria**: 2 Marks (Negative marking: -0.66 marks).
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